scholarly journals Grain yield stability analysis of Jembar local rice mutant lines generated from mutation breeding

Author(s):  
A K Dewi ◽  
I Dwimahyani
2021 ◽  
Author(s):  
Marium Khatun ◽  
A. K. M. Aminul Islam ◽  
M. Rafiqul Islam ◽  
M. A. Rahman Khan ◽  
M. Kamal Hossain

Abstract During the 2018-2019 Boro season (dry season), 70 rice genotypes were examined with alpha lattice experimental design with the goal of measuring grain yield stability analysis. Results indicated that AMMI analysis explained 100% of the G×E variance, while captured 81.74% variance. Based on the GGE and AMMI analysis, the most stable and high yielding genotype was identified G41 followed by G22, G26, G58, G24 and G61. The AMMI 1 biplot analysis revealed that the first primary component of interaction (IPC1) factor was responsible for 64.2 % variation due to G × E interaction. On other hand, the second primary component (PC2) factor accounted for 35.8% variation of the G × E interaction. These two-primary component (PC1 and PC2), all together accounted for 100% variation of the G × E interaction. The contribution of G68 was highest to the interaction followed by G70, G58, G42, G61, G45, G38, G14, G33, G60, G53, and G9. Best environment analysis indicated that the ranking was Rajshahi < Gazipur < Cumilla. GGE biplot analysis accounted for 81.74% variation comprising two principal components PC1 and PC2 with 45.62% and 36.12% variations respectively. Rajshahi was more stable than Gazipur. Based on environment analysis genotypes, G22, G26, G58, and G44 can be recommended as best stable genotypes that breeding zone. However, the genotype G61 was identified adapted to Cumilla breeding zone.


Author(s):  
M. A. Rouf ◽  
N. A. Khan ◽  
M. L. A. Mueez ◽  
N. I. Toma ◽  
S. Mahmud ◽  
...  

Growth performance, yield components and total grain yield of a rice mutant lines were evaluated againest two popular rice varieties on farm experiments within five different upazila of Mymensingh region to find out the better cultivar on the besis of yield and duration. The experiment was laid out in a randomized complete block design (RCBD) with three replications. The study was conducted for two consecutive season that ensure the stability of the mutant line. The results revealed that the cultivar RM(2)-40-©-4-2-8 was recorded highest effective tiller and maximum filled grain in most of the location. Among the all cultivar RM(2)-40-©-4-2-8 was recorded maximum grain yield in most of the location for two consecutive year which was statistically significant from other cultivar.


2016 ◽  
Vol 8 (2) ◽  
pp. 43-51
Author(s):  
D. Ramla ◽  
M.S. Yakhou ◽  
N. Bilek ◽  
M. Hamou ◽  
A. Hannachi ◽  
...  

2020 ◽  
Vol 80 (03) ◽  
Author(s):  
K. Sumalini ◽  
T. Pradeep ◽  
D. Sravani

Interaction of homozygous inbreds and heterozygous single, three way and double crosses with environment had shown a differential response in achieving yield stability. Seven diverse maize inbreds, their 21 single crosses and 105 each of three way and double crosses obtained through diallel were evaluated for twelve characters across three diverse locations to estimate comparative stability of homozygous and heterozygous genotypes for grain yield. Contrasts in heterobeltiosis, combining ability and stability parameters in three environments and interaction effects were observed. Gain in heterobeltiosis (%) for grain yield was observed with decreased environmental quality in different hybrid classes suggesting that heterozygous hybrids are more stable due to individual buffering in single crosses and both individual and population buffering in case of three way and double crosses. Significant increase in SCA effects was observed in moderate environment at Hyderabad rather than at high yielding environment Palem. Significant G × E and Environment (linear) in all the crosses was observed for grain yield suggesting the effect of environment and its pre dominant effect on grain yield. Stability of hybrids was attributed to their superior performance over the parents in low yielding environment. Thus the potential use of selected heterozygous hybrids would allow under diverse environments is suggested to mitigate losses arising out of climate change.


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